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Arpi Majumder

Other affiliations: Heriot-Watt University
Bio: Arpi Majumder is an academic researcher from Jadavpur University. The author has contributed to research in topics: Ligand & Crystal structure. The author has an hindex of 9, co-authored 9 publications receiving 669 citations. Previous affiliations of Arpi Majumder include Heriot-Watt University.

Papers
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TL;DR: In this paper, the trinuclear unit is held together by bridging deprotonated phenolic oxygen atoms from the Schiff base and acetate groups, and the structures of the three synthesised complexes have been determined by single-crystal X-ray diffraction.

338 citations

Journal ArticleDOI
TL;DR: In this paper, a combination of N-donor coligands, such as 4-aminopyridine (4-apy), pyrazine (pyz), 2,4,6-tris(2-pyridyl)-1,3,5-triazine (tptz), and 4,4-bipyridine(4,4)-bipy) with transition metal ions Co(II) and Cu(II), give rise to five coordination complexes, namely, [{Co(H2btec)(H2
Abstract: 1,2,4,5-Benzenetetracarboxylic acid (H4btec) and a combination of N-donor coligands, such as 4-aminopyridine (4-apy), pyrazine (pyz), 2,4,6-tris(2-pyridyl)-1,3,5-triazine (tptz), and 4,4‘-bipyridine (4,4‘-bipy) with transition metal ions Co(II) and Cu(II), give rise to five coordination complexes namely, [{Co(H2btec)(H2O)4}·4-apy·(H2O)2]n (1), [{Cu(btec)(4-apy)2}·(4-Hapy)2·(H2O)4]n (2), [{Cu(H3btec)2(pyz)·(H2O)2}·H2O]n (3), [Co(tptz)(H2O)2(H2btec)]·(H2O)2 (4), and [{Co2(4,4‘-bipy)2(H2O)8}·(btec)·(H2O)2]n (5). All these complexes form supramolecular frameworks through ligand-based hydrogen bonding interactions. They have been characterized by a combination of analytical, spectroscopic, and crystallographic methods. These highly crystalline complexes have been obtained under different pH conditions at room temperature and the btec binding mode differs in these five complexes. Complex 1 is a one-dimensional (1D) layered solid consisting of alternating neutral metal−organic coordination polymeric chains, [Co(...

139 citations

Journal ArticleDOI
TL;DR: In this paper, a new macrocyclic hexanuclear manganese(III) 18-azametallacrown-6 compound, [Mn6(ashz)6(CH3OH)3(H2O)3] AE 3H 2O AE 3DMF (1), has been prepared using a trianionic pentadentate ligand N-acetylsalicylhydrazide (ashz 3� ) and characterised by various techniques such as elemental analysis, IR, UV-vis and fluorescence spectroscopy,

48 citations

Journal ArticleDOI
TL;DR: In this paper, three new dicyanamido [N(CN)2] � (dca) compounds of the formula [Mn(ac)(tptz)2(dca)(H2O)] AE (H 2O)2 (1), [Zn(nptz)(dca), AE(H 2 O) 2 (2,4,6-tris(2-pyridyl)-1,3,5-triazine) have been synthesized.

46 citations


Cited by
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TL;DR: In this paper, a review of metal-organic frameworks (MOFs) and porous coordination polymers (PCPs) with selected examples of their structures, concepts for linkers, syntheses, post-synthesis modifications, metal nanoparticle formations in MOFs, porosity and zeolitic behavior for applications in gas storage for hydrogen, carbon dioxide, methane and applications in conductivity, luminescence and catalysis.
Abstract: This review (over 380 references) summarizes metal–organic frameworks (MOFs), Materials Institute Lavoisier (MILs), iso-reticular metal–organic frameworks (IR-MOFs), porous coordination networks (PCNs), zeolitic metal–organic frameworks (ZMOFs) and porous coordination polymers (PCPs) with selected examples of their structures, concepts for linkers, syntheses, post-synthesis modifications, metal nanoparticle formations in MOFs, porosity and zeolitic behavior for applications in gas storage for hydrogen, carbon dioxide, methane and applications in conductivity, luminescence and catalysis.

1,017 citations

Journal ArticleDOI
TL;DR: Six new coordination polymers, namely L1-L3, BTC = 1,3,5-benzenetricarboxylate anion, were synthesized under hydrothermal conditions and the luminescent properties for 1-3 and magnetic properties for 4-6 are discussed in detail.
Abstract: Six new coordination polymers, namely [Zn1.5(BTC)(L1)(H2O)2]·1.5H2O (1), [Zn3(BTC)2(L2)3] (2), [Zn3(BTC)2(L3)1.5(H2O)]·H2O (3), [Co6(BTC)4(L1)6(H2O)3]·9H2O (4), [Co1.5(BTC)(L2)1.5]·0.25H2O (5), and [Co4(BTC)2(L3)2(OH)2(H2O)]·4.5H2O (6), where L1 = 1,2-bis(imidazol-1-ylmethyl)benzene, L2 = 1,3-bis(imidazol-1-ylmethyl)benzene, L3 = 1,1‘-(1,4-butanediyl)bis(imidazole), and BTC = 1,3,5-benzenetricarboxylate anion, were synthesized under hydrothermal conditions. In 1−6, each of L1−L3 serves as a bidentate bridging ligand. In 1, BTC anions act as tridentate ligands, and compound 1 shows a 2D polymeric structure which consists of 2-fold interpenetrating (6, 3) networks. In compound 2, BTC anions coordinate to zinc cations as tridentate ligands to form a net with (64·82)2(86)(62·8)2 topology. In compound 3, BTC anions act as tetradentate ligands and coordinate to zinc cations to form a net with (4·62·83)2(8·102)(4·6·83·10)2 topology. In compound 5, each BTC anion coordinates to three Co cations, and the framework...

308 citations

Journal ArticleDOI
TL;DR: The hydrothermal reaction of M(NO3)2.6H2O with benzene-1,3,5-tricarboxylic acid and 1,2-bis(1,2,4-triazol-4-yl)ethane produced the mixed-ligand coordination polymers (MOFs) that feature trinuclear secondary building units (SBU) within the three-dimensional frameworks.
Abstract: The hydrothermal reaction of M(NO3)2·6H2O (M = Ni and Zn) with benzene-1,3,5-tricarboxylic acid (H3btc) and 1,2-bis(1,2,4-triazol-4-yl)ethane (btre) produced the mixed-ligand coordination polymers (MOFs) 3∞{[Ni3(µ3-btc)2(µ4-btre)2(µ-H2O)2]·∼22H2O} (1) and 3∞{[Zn3(µ4-btc)2(µ4-btre)(H2O)2]·2H2O} (3). The compounds, characterized by single-crystal X-ray diffraction, X-ray powder diffraction and thermoanalysis feature trinuclear secondary building units (SBU) within the three-dimensional frameworks. The trinuclear nickel unit in 1 exhibits an intra-trimer together with some weak inter-trimer antiferromagnetic coupling with J = −13.88(8) cm−1 from the magnetic susceptibility measurement between 1.9–300 K. The zinc coordination polymer 3 shows a strong fluorescence at 423 nm upon excitation at 323 nm (not seen in the free btre ligand). Compound 3 is thermally robust until 200 °C (ambient pressure) where loss of the water molecules starts. Careful control of the dehydration procedure (freeze-drying) for 1 and (heating to 280 °C) for 3 allowed for a solid-state reaction with single-crystal-to-single-crystal structural transformations in obtaining the largely dehydrated products 3∞{[Ni3(µ2-btc)2(µ4-btre)2(µ-H2O)2(H2O)2]·4H2O} (2) and 3∞{[Zn3(µ6-btc)2(µ4-btre)2]·∼0.67H2O} (4), respectively. In the transformation from 1 to 2 the unit cell volume is reduced to about 60%. The transition from 3 to 4 involves breakage and formation of new Zn–O bonds.

253 citations

Journal ArticleDOI
TL;DR: In this paper, a biobased flame retardant based on industrial lignin chemically grafted with phosphorus, nitrogen and copper elements was used as a functional additive for wood-plastic composites.
Abstract: Despite growing extensive applications, until now the poor thermal stability and flame retardancy properties of wood–plastic composites (WPC) remain effectively unsolved. Meanwhile, industrial lignin has emerged as a potential component for polymer composites due to many advantages including abundance, rich reactive functional groups, high carbon content and tailored capability for chemical transformations. Herein, we have fabricated one biobased flame retardant based on industrial lignin chemically grafted with phosphorus, nitrogen and copper elements, as the functional additive for the WPC. Compared with unmodified lignin (O-lignin), functionalized lignin (F-lignin) is more effective to improve the thermal stability and flame retardancy of WPC because of presence of the flame retardancy elements (P and N) and the catalytic effect of Cu2+ on the char-formation. The presence of F-lignin not only reduces the heat release rate, total heat release and slows down the combustion process but also decreases tota...

235 citations

Journal ArticleDOI
TL;DR: In this paper, two novel cadmium-II and copper-II-based high-connected metal-organic frameworks, with both 1,2,4,5-benzenetetetracarboxylate (btec) and 1,4-bis(1, 2, 4-triazol-1-ylmethyl)benzene (btx) as mixed ligands were hydrothermally synthesized and structurally characterized.
Abstract: {[Cd3(btec)(btx)0.5(μ3-OH)(H2O)]·H2O}n (1) and [Cu2(btec)(btx)1.5]n (2), two novel cadmium(II) and copper(II)-based high-connected metal–organic frameworks, with both 1,2,4,5-benzenetetracarboxylate (btec) and 1,4-bis(1,2,4-triazol-1-ylmethyl)benzene (btx) as mixed ligands were hydrothermally synthesized and structurally characterized. Both MOFs have three-dimensional (3D) structures, but different framework topologies and ligand linkage modes. 1 possesses an unprecedented binodal (4,12)-connected topology structure, in which the ligand btec serves as a rare dodecadentate and ordinary octadentate in two types of coordination modes. Meanwhile, 2 exhibits a binodal (4,7)-connected topological network with an enneadentate coordination geometry of the btec ligand. Both MOFs provide novel examples of designing and synthesizing novel binodal MOFs, and demonstrate that the 1,2,4,5-benzenetetracarboxylic acid ligand with rich coordination chemistry information is useful in the construction of binodal highly-connected nets. In addition, the catalytic performance of 2 has also been checked. 2 is active as a catalyst for the degradation of methyl orange.

195 citations